two firewire drives, one device
I am having a problem with ieee1394. I have two essentially identical
external firewire drives. If I plug in either one, it seems to show up
properly as a device. If both are plugged in, however, there is only one
device. Any help is appreciated. This is what dmesg says when I plug in
one, then the other:
ieee1394: Node changed: 0-01:1023 -> 0-00:1023
ieee1394: Node changed: 0-02:1023 -> 0-01:1023
ieee1394: Reconnected to SBP-2 device
ieee1394: Node 0-00:1023: Max speed [S400] - Max payload [2048]
ieee1394: Node changed: 0-01:1023 -> 0-00:1023
ieee1394: Node suspended: ID:BUS[0-00:1023] GUID[0030e002e0454647]
ieee1394: Node resumed: ID:BUS[0-00:1023] GUID[0030e002e0454647]
ieee1394: Node changed: 0-00:1023 -> 0-01:1023
scsi1 : SCSI emulation for IEEE-1394 SBP-2 Devices
ieee1394: sbp2: Logged into SBP-2 device
ieee1394: Node 0-00:1023: Max speed [S400] - Max payload [2048]
Vendor: MDT MD25 Model: 00JB-00EVA0 Rev: 15.0
Type: Direct-Access-RBC ANSI SCSI revision: 04
SCSI device sdi: 488397168 512-byte hdwr sectors (250059 MB)
sdi: asking for cache data failed
sdi: assuming drive cache: write through
SCSI device sdi: 488397168 512-byte hdwr sectors (250059 MB)
sdi: asking for cache data failed
sdi: assuming drive cache: write through
sdi: unknown partition table
Attached scsi disk sdi at scsi1, channel 0, id 0, lun 0
ieee1394: Node changed: 0-00:1023 -> 0-01:1023
ieee1394: Node changed: 0-01:1023 -> 0-02:1023
ieee1394: Reconnected to SBP-2 device
ieee1394: Node 0-01:1023: Max speed [S400] - Max payload [2048]
Note that I have an actual SCSI card at scsi0, with disks attached. I am
using the Debian stock kernel 2.6.14-2-powerpc-smp from sid. More info:
1) I can get the serial number from /dev/sdi using scsiinfo. When only one
drive is plugged in, the serial number reported is that of the plugged
in drive (no surprises). When both are plugged in, the serial number
reported is that of whichever drive was plugged in second.
2) /sys/bus/ieee1394/devices lists the following when both drives are
plugged in:
lrwxrwxrwx 1 root root 0 Dec 24 15:07 000393fffe0ae224 -> ../../../devices/pci0002:20/0002:20:0e.0/fw-host0/000393fffe0ae224/
lrwxrwxrwx 1 root root 0 Dec 24 15:07 000393fffe0ae224-0 -> ../../../devices/pci0002:20/0002:20:0e.0/fw-host0/000393fffe0ae224/000393fffe0ae224-0/
lrwxrwxrwx 1 root root 0 Dec 24 15:07 0030e002e0454647 -> ../../../devices/pci0002:20/0002:20:0e.0/fw-host0/0030e002e0454647/
lrwxrwxrwx 1 root root 0 Dec 24 15:07 0030e002e0454647-0 -> ../../../devices/pci0002:20/0002:20:0e.0/fw-host0/0030e002e0454647/0030e002e0454647-0/
lrwxrwxrwx 1 root root 0 Dec 24 15:07 fw-host0 -> ../../../devices/pci0002:20/0002:20:0e.0/fw-host0/
--Greg
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